1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
kolezko [41]
3 years ago
5

Name the five cardiac cycle activities starting with excitation and ending with regulation of blood flow and volume.

Biology
1 answer:
stira [4]3 years ago
3 0

Answer:

Explanation:

1) Excitation brings about contraction.

2) Contraction leads to an increase in blood pressure.

3) Changes in blood pressure results in the opening and closing of the heart valves.

4) The opening and closing of heart valves then regulates the flow of blood and it's volume.

You might be interested in
Chapter 1: Introduction: Evolution and the Foundations of Biology 1. _______ DNA is composed of building blocks called _____. a.
irina [24]

Answer:

C. Nucleotides

Explanation:

Nucleic acids are macromolecules which are polymers of nucleotides. There are two types of nucleic acids namely: deoxyribonucleic acid (DNA) and ribonucleic acid (RNA). Nucleotides are the building blocks of nucleic acids.

A nucleotide is made up of three components:

- A phosphate group

- A five carbon sugar called pentose sugar. In RNA the sugar is ribose sugar and in DNA the sugar is deoxyribose sugar.

- Nitrogenous bases: There are four different types of bases in DNA: adenine, guanine, cytosine and thymine. In RNA thymine is replaced by uracil. Adenine and guanine are purines whereas cytosine, thymine and uracil are pyrimidines.

Nitrogenous base and sugar together are called nucleoside and when phosphate is also attached then it is called nucleotide.

6 0
2 years ago
An estuary is ___
emmainna [20.7K]

Answer:

<em>The correct option is d)  an ecotone</em>

Explanation:

An ecotone can be described as an area of transition between two different biomes. An estuary can be described as an ecotone where the river water meets the seawater. The freshwater biome mixes with the seawater biome in an estuary. Unique plants and animals are grown in an estuary which are adapted to live in such an environment. The water present in an estuary is termed as brackish water. Hence, the correct option is d.

5 0
3 years ago
Read 2 more answers
What is the purpose of breathing exercises? A. To release adrenaline be. To decrease your sense of awareness C. To settle the bo
borishaifa [10]

Answer:

C

Explanation:

7 0
3 years ago
10 points whoever answers this first
anyanavicka [17]

the highest humidity would be texas i know that for sure but on here i'd say it is arizona

4 0
3 years ago
What are some examples of social issues?
solmaris [256]

Answer:

Common examples of social issues: Poverty and Homelessness, Climate Change, Civil Rights and Racial Discrimination, etc.

Explanation:

There's so much more examples of social issues down the list, but that'll take to long, these are enough for now.

8 0
2 years ago
Other questions:
  • 6. Which of the following discoveries provided a critical clue to Watson and Crick in solving the structure of DNA? (1 point)
    12·2 answers
  • Which element do proteins, lipids, and carbohydrates have in common?
    15·1 answer
  • Moneran is a..
    14·1 answer
  • The G 1 stage of the cell cycle marks the beginning of the ________.
    13·1 answer
  • A 49dash–yeardash–old male has been stabbed in the lower right chest. police tell you that the patient got into an argument with
    9·2 answers
  • NEED HELP QUICK PLEASE!!!!
    5·1 answer
  • During photosynthesis, water and carbon dioxide become glucose and oxygen<br><br> true or false
    7·2 answers
  • Light requirements of photosynthesis?
    9·1 answer
  • According to the Nutrition Facts panel on a box of granola bars, a single bar provide 5 grams of fat, 19 grams of carbohydrate,
    5·1 answer
  • The primary purpose of a restriction enzyme in genetics is…
    6·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!